Trent Park: WWII spy centre opens as museum amid housing development
A north London mansion that yielded critical Allied intelligence during World War II has opened as a museum, saved from dereliction through a public-private deal that saw property developers build hundreds of homes on the estate.
Trent Park in Enfield opens to the public today as the House of Secrets. The site was previously known as "Cockfosters Camp", a Second World War interrogation centre where German officers were treated as house guests while British intelligence recorded their every word.
Microphones hidden in lamps, tables and garden benches captured thousands of hours of conversation. German-speaking Jewish refugees, working from a basement lair, transcribed the recordings in seven-minute segments using equipment specially designed by General Post Office engineers. The resulting intelligence provided the Allies with crucial evidence of V2 rocket development and early eyewitness accounts of concentration camps.
The museum's opening resolves a decade-long battle over the estate's future, illustrating how heritage sites are increasingly relying on private capital to survive. After Middlesex University vacated the property in 2012, a planned purchase by a Malaysian university collapsed, leaving the building derelict.
Local campaigners, armed with a 10,000-signature petition, intervened in 2014 to halt the decay. Their efforts culminated in a long lease agreement with Berkeley Homes. Under this model, the developer funded the full restoration of the ground floor state rooms and basement tunnels, while building luxury private apartments on the upper floors. Hundreds of new houses and flats have also been constructed across the broader estate grounds.
The original 1780s house, built by architect William Chambers at a cost of £19,000 for royal physician Richard Jebb, later became a hub for European political and cultural elites. Banking tycoon Edward Sassoon bought the estate in 1909, and his son Philip transformed it into a lavish gathering place for figures including Winston Churchill, Charlie Chaplin and George Bernard Shaw.
Some of Philip Sassoon's original furnishings have now returned to the museum on loan from his great nephew, David Cholmondeley, and other family members. This includes a recently rediscovered Rex Whistler decoration featuring a favourite Sassoon dog.
“This is not just a little local museum,” Jason Charalambous, founder and co-chair of the Trent Park Museum Trust, says. “This is a story that needed to be told.” For the local economy, the site now functions as a hybrid of high-end residential real estate and preserved public space.
